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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Phase Transformations and Microstructural Evolution
Presentation Title Phase-field Simulation of Microstructure Evolution during Solidification in Metal Additive Manufacturing
Author(s) Jiwon Park, Chang-Seok Oh
On-Site Speaker (Planned) Jiwon Park
Abstract Scope When a heat source passes over the build surface during additive manufacturing, the materials undergo rapid solidification that results unique microstructures and properties. Even in a single beam path with straight trajectory, solidification velocity and cooling rate vary with the relative position to the heat source which set different solidification conditions. In this research 3-dimensional microstructure evolution of FCC metal during rapid solidification in additive manufacturing is studied with phase-field modeling. Different solidification conditions extracted from thermal computation were taken to simulate microstructure evolution when the build metal is grown from pre-built layers in [100], [110], and [111] normal directions. The results are also compared with randomly nucleated microstructures.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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